Centrifugal separator.



Patented Feb. 26, 1918.

MILLER, 0F LONG ISLAND @ITY, NEW YORK, ASSIGNOR T0 SHARPLES SPECIALTY @QMPAN'Y, 0F WEST CHESTER, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CENTRIFUGAL SEPARATOR.

To all whom it may concern:

Be it known'that 1, MAX BRUNO MILLER, a citizen of the United States, residing at Long Island City, in the county of Queens and State of New York, have invented certain Improvements in Centrifugal Separatprs, of which the following is a specification.

My invention relates to machines for separating substances of difierent densities by centrifugal force, and a primary object thereof is to maintain a desired balance of he revolving bowl of such machines.

ln the centrifugal clarification of certain liquids containing a fairly high percentage of rather coarse sediment, as dry cleaner s benzin, for instance, there has been difficulty in maintaining the bowl in balance, due to the unequal distribution of solids therein. I have been able to overcome this difficulty and increase the efliciency of operation by my improved machine.

In my invention, in its preferred form, the substances to be separated are delivered in a solid stream against a spreader and deflected laterally thereby into an unobstructed bottom section of a revolving bowl, being separated therein by centrifugal force. The wings are eliminated, which are usually employed to catch the substances as they are delivered to the bowl and give the same an initial high rate of speed, but means such as wings for accelerating the revolution of the substances may be used in the part of the bowl above the unobstructed bottom space.

The nature and characteristic features of my improvements are embodied in the machine set forth in the following description and the accompanying drawing in illustration thereof.

The drawing is a vertical sectional view of a centrifugal separator embodying my improvements.

The machine'illustrated in the drawing comprises the frame 1 provided with the case 2 in which'a bowl 3 is suspended and revolved by a spindle 4, the latter being carried by the bearings-5.

The bowl bottom '6 is provided with the boss 7 having therein the passage 8 forming an axial inlet to the bowl.

A hollow plug 9, through which the substances are delivered to the bowl, is screwed into the bottom of the case 2, with its orifice 10in axial alinement with the orifice 8 when Specification of Letters Patent.

Patented lfieb. %b, lwlldo Application filed October 10, 1917. Serial No. 195,717.

the bowl is in correct balance or its axis is vertical, the plug carrying a thimble 11 containing a bushing 12, a washer 13 and a spring 14 for steadying the bottom of the revolving bowl.

This construction, previously known in its general features, is, accordin to my invention, provided with a sprea er 15, preferably a fiat disk supported above the bottom 6 and the inlet 8, centrally with reference to the axis thereof, by the legs 16, which are fixed to the bottom beyond the inlet; and the interior of the lower end of the bowl, the section 17, is otherwise an unobstructed chamber, without the usual means fixed thereto for initially accelerating the revolution of the incoming substances.

The upper part of the interior of the bowl may, and preferably does, contain the wings 18 which catch the substances as they are carried upward in the bowl due to the centrifugal force to which they are subjected,

with resulting acceleration of the revolution of such substances and a completion of the separation in the top of the bowl. The lighter liquid escapes through the outlet 19 in the top of the bowl to the pan 20, removably supported on the top of the case 2, and the separated solids may be removed from the bowl in any desired manner, as by removing the bottom 6, the bowl 3 having been uncoupled from the spindle l and withdrawn from the case 2.

In the operation, the incoming liquid is delivered from the orifice 10, through the inlet 8, in a solid stream, against the spreader 15, by which it is deflected laterally in the bowl bottom, the spreader, the legs 16 and the unobstructed peripheral surface of the interior of the bowl acting upon the substances to effect their revolution, the rate-of which increases gradually, without e'decti-ng such unequal lodgments of the solids that the center of the revolving mass is eccentric to the axis of the revolving bowl.

' Having described my invention, ll claim:

1. A. centrifugal separator having a revoluble vertical bowl provided with means for admitting a solid stream thereto and means for efiecting substantially unrestricted spreading of said stream within the bottom of said bowl.

2. A centrifugal separator having a suspended bowl with a substantially vertical axis of revolution, an axial bottom inlet,

and means above said inlet for effecting substantially unrestricted spreading and permitting substantially free rotation within the bottom of said bowl of a fluid delivered through said inlet.

3. A centrifugal spreader having a bowl with a substantially 'vertical axis of revolution, an axial botto'm inlet, a substantially unobstructed bottom, and means above said inlet for efiecting substantially free spreading and permitting substantiall free circulation within said bottom of a iquid introduced through said inlet.

4. A centrifugal separator having a bowl with a substantially vertical axis of revolution, a substantially unobstructed lower interior section, an axial bottom inlet, a spreader above said inlet, and means for supporting said spreader without substantially obstructing its action upon a liquid introduced through said inlet.

5. A centrlfugal separator having a bowl -with a substantially vertical axis of revolution, an unobstructed peripheral surface within its lower end and within its upper end means for catching and accelerating the revolution of substances delivered thereto.

6. A centrifugal separator having a suspended bowl with a vertical axis of revolution, an unobstructed peripheral surface within its lower end, wings fixed within its upper end, an inlet, and means for spreading substances'introduced through said inlet within said lower end. I

In testimony whereof I have hereunto set my name this 26th day of Sept, 1917.

MAX B. MILLER. 

